1 include "llvm/Option/OptParser.td"
3 // Convenience classes for long options which only accept two dashes. For lld
4 // specific or newer long options, we prefer two dashes to avoid collision with
5 // short options. For many others, we have to accept both forms to be compatible
7 class FF<string name> : Flag<["--"], name>;
8 class JJ<string name>: Joined<["--"], name>;
10 multiclass EEq<string name, string help> {
11 def NAME: Separate<["--"], name>;
12 def NAME # _eq: Joined<["--"], name # "=">, Alias<!cast<Separate>(NAME)>,
16 multiclass BB<string name, string help1, string help2> {
17 def NAME: Flag<["--"], name>, HelpText<help1>;
18 def no_ # NAME: Flag<["--"], "no-" # name>, HelpText<help2>;
21 // For options whose names are multiple letters, either one dash or
22 // two can precede the option name except those that start with 'o'.
23 class F<string name>: Flag<["--", "-"], name>;
24 class J<string name>: Joined<["--", "-"], name>;
26 multiclass Eq<string name, string help> {
27 def NAME: Separate<["--", "-"], name>;
28 def NAME # _eq: Joined<["--", "-"], name # "=">, Alias<!cast<Separate>(NAME)>,
32 multiclass B<string name, string help1, string help2> {
33 def NAME: Flag<["--", "-"], name>, HelpText<help1>;
34 def no_ # NAME: Flag<["--", "-"], "no-" # name>, HelpText<help2>;
37 defm auxiliary: Eq<"auxiliary", "Set DT_AUXILIARY field to the specified name">;
39 def be8: F<"be8">, HelpText<"write a Big Endian ELF file using BE8 format (AArch32 only)">;
41 def Bno_symbolic: F<"Bno-symbolic">, HelpText<"Don't bind default visibility defined symbols locally for -shared (default)">;
43 def Bsymbolic: F<"Bsymbolic">, HelpText<"Bind default visibility defined symbols locally for -shared">;
45 def Bsymbolic_non_weak: F<"Bsymbolic-non-weak">,
46 HelpText<"Bind default visibility defined STB_GLOBAL symbols locally for -shared">;
48 def Bsymbolic_functions: F<"Bsymbolic-functions">,
49 HelpText<"Bind default visibility defined function symbols locally for -shared">;
51 def Bsymbolic_non_weak_functions: F<"Bsymbolic-non-weak-functions">,
52 HelpText<"Bind default visibility defined STB_GLOBAL function symbols locally for -shared">;
54 def Bdynamic: F<"Bdynamic">, HelpText<"Link against shared libraries (default)">;
56 def Bstatic: F<"Bstatic">, HelpText<"Do not link against shared libraries">;
58 def build_id: J<"build-id=">, HelpText<"Generate build ID note">,
59 MetaVarName<"[fast,md5,sha1,uuid,0x<hexstring>]">;
60 def : F<"build-id">, Alias<build_id>, AliasArgs<["fast"]>, HelpText<"Alias for --build-id=fast">;
62 defm check_sections: B<"check-sections",
63 "Check section addresses for overlaps (default)",
64 "Do not check section addresses for overlaps">;
66 defm compress_debug_sections:
67 Eq<"compress-debug-sections", "Compress DWARF debug sections">,
68 MetaVarName<"[none,zlib,zstd]">;
70 defm defsym: Eq<"defsym", "Define a symbol alias">, MetaVarName<"<symbol>=<value>">;
72 defm optimize_bb_jumps: BB<"optimize-bb-jumps",
73 "Remove direct jumps at the end to the next basic block",
74 "Do not remove any direct jumps at the end to the next basic block (default)">;
76 defm fortran_common : BB<"fortran-common",
77 "Search archive members for definitions to override COMMON symbols (default)",
78 "Do not search archive members for definitions to override COMMON symbols">;
80 defm split_stack_adjust_size
81 : Eq<"split-stack-adjust-size",
82 "Specify adjustment to stack size when a split-stack function calls a "
83 "non-split-stack function">,
84 MetaVarName<"<value>">;
86 def O: JoinedOrSeparate<["-"], "O">, HelpText<"Optimize output file size">;
88 def cmse_implib: FF<"cmse-implib">,
89 HelpText<"Make the output library to be a CMSE secure code import library">;
91 defm in_implib: EEq<"in-implib",
92 "Read an existing CMSE secure code import library and preserve entry function addresses in the "
93 "resulting new CMSE secure code import library (optional when creating a CMSE secure image)">,
94 MetaVarName<"<file>">;
96 defm out_implib: EEq<"out-implib",
97 "Output the CMSE secure code import library to <file> (required when creating a CMSE secure image)">,
98 MetaVarName<"<file>">;
100 defm Tbss: Eq<"Tbss", "Same as --section-start with .bss as the sectionname">;
102 defm Tdata: Eq<"Tdata", "Same as --section-start with .data as the sectionname">;
104 defm Ttext: Eq<"Ttext", "Same as --section-start with .text as the sectionname">;
106 def Ttext_segment: Separate<["-", "--"], "Ttext-segment">;
108 defm allow_multiple_definition: B<"allow-multiple-definition",
109 "Allow multiple definitions",
110 "Do not allow multiple definitions (default)">;
112 defm allow_shlib_undefined: B<"allow-shlib-undefined",
113 "Allow unresolved references in shared libraries (default when linking a shared library)",
114 "Do not allow unresolved references in shared libraries (default when linking an executable)">;
116 defm apply_dynamic_relocs: BB<"apply-dynamic-relocs",
117 "Apply link-time values for dynamic relocations",
118 "Do not apply link-time values for dynamic relocations (default)">;
120 defm dependent_libraries: BB<"dependent-libraries",
121 "Process dependent library specifiers from input files (default)",
122 "Ignore dependent library specifiers from input files">;
124 defm as_needed: B<"as-needed",
125 "Only set DT_NEEDED for shared libraries if used",
126 "Always set DT_NEEDED for shared libraries (default)">;
128 defm call_graph_ordering_file:
129 Eq<"call-graph-ordering-file", "Layout sections to optimize the given callgraph">;
131 def call_graph_profile_sort: JJ<"call-graph-profile-sort=">,
132 HelpText<"Reorder input sections with call graph profile using the specified algorithm (default: hfsort)">,
133 MetaVarName<"[none,hfsort]">,
134 Values<"none,hfsort">;
135 def : FF<"no-call-graph-profile-sort">, Alias<call_graph_profile_sort>, AliasArgs<["none"]>,
138 // --chroot doesn't have a help text because it is an internal option.
139 def chroot: Separate<["--"], "chroot">;
141 def color_diagnostics: JJ<"color-diagnostics=">,
142 HelpText<"Use colors in diagnostics (default: auto)">,
143 MetaVarName<"[auto,always,never]">;
144 def : Flag<["--"], "color-diagnostics">, Alias<color_diagnostics>, AliasArgs<["always"]>,
145 HelpText<"Alias for --color-diagnostics=always">;
146 def : Flag<["--"], "no-color-diagnostics">, Alias<color_diagnostics>, AliasArgs<["never"]>,
147 HelpText<"Alias for --color-diagnostics=never">;
149 def cref: FF<"cref">,
150 HelpText<"Output cross reference table. If -Map is specified, print to the map file">;
152 defm demangle: B<"demangle",
153 "Demangle symbol names (default)",
154 "Do not demangle symbol names">;
156 defm dependency_file: EEq<"dependency-file", "Write a dependency file">,
157 MetaVarName<"<file>">;
159 def disable_new_dtags: F<"disable-new-dtags">,
160 HelpText<"Disable new dynamic tags">;
162 def discard_all: F<"discard-all">, HelpText<"Delete all local symbols">;
164 def discard_locals: F<"discard-locals">,
165 HelpText<"Delete temporary local symbols">;
167 def discard_none: F<"discard-none">,
168 HelpText<"Keep all symbols in the symbol table">;
170 defm dynamic_linker: Eq<"dynamic-linker", "Which dynamic linker to use">;
172 defm dynamic_list : Eq<"dynamic-list",
173 "Similar to --export-dynamic-symbol-list. When creating a shared object, "
174 "this additionally implies -Bsymbolic but does not set DF_SYMBOLIC">,
175 MetaVarName<"<file>">;
177 def eb: F<"EB">, HelpText<"Select the big-endian format in OUTPUT_FORMAT">;
178 def el: F<"EL">, HelpText<"Select the little-endian format in OUTPUT_FORMAT">;
180 defm eh_frame_hdr: B<"eh-frame-hdr",
181 "Request creation of .eh_frame_hdr section and PT_GNU_EH_FRAME segment header",
182 "Do not create .eh_frame_hdr section">;
184 def emit_relocs: F<"emit-relocs">, HelpText<"Generate relocations in output">;
186 def enable_new_dtags: F<"enable-new-dtags">,
187 HelpText<"Enable new dynamic tags (default)">;
189 def end_group: F<"end-group">,
190 HelpText<"Ignored for compatibility with GNU unless you pass --warn-backrefs">;
192 def end_lib: F<"end-lib">,
193 HelpText<"End a grouping of objects that should be treated as if they were together in an archive">;
195 defm entry: Eq<"entry", "Name of entry point symbol">,
196 MetaVarName<"<entry>">;
199 EEq<"error-limit", "Maximum number of errors to emit before stopping (0 = no limit)">;
201 def error_unresolved_symbols: F<"error-unresolved-symbols">,
202 HelpText<"Report unresolved symbols as errors">;
204 defm error_handling_script: EEq<"error-handling-script",
205 "Specify an error handling script">;
207 defm exclude_libs: Eq<"exclude-libs", "Exclude static libraries from automatic export">;
209 defm execute_only: BB<"execute-only",
210 "Mark executable sections unreadable",
211 "Mark executable sections readable (default)">;
213 defm export_dynamic: B<"export-dynamic",
214 "Put symbols in the dynamic symbol table",
215 "Do not put symbols in the dynamic symbol table (default)">;
217 defm export_dynamic_symbol : EEq<"export-dynamic-symbol",
218 "(executable) Put matched symbols in the dynamic symbol table. "
219 "(shared object) References to matched non-local STV_DEFAULT symbols "
220 "shouldn't be bound to definitions within the shared object. "
221 "Does not imply -Bsymbolic.">,
224 defm export_dynamic_symbol_list : EEq<"export-dynamic-symbol-list",
225 "Read a list of dynamic symbol patterns. Apply --export-dynamic-symbol on each pattern">,
228 defm fatal_warnings: B<"fatal-warnings",
229 "Treat warnings as errors",
230 "Do not treat warnings as errors (default)">;
232 defm filter: Eq<"filter", "Set DT_FILTER field to the specified name">;
234 defm fini: Eq<"fini", "Specify a finalizer function">, MetaVarName<"<symbol>">;
236 def fix_cortex_a53_843419: F<"fix-cortex-a53-843419">,
237 HelpText<"Apply fixes for AArch64 Cortex-A53 erratum 843419">;
239 def fix_cortex_a8: F<"fix-cortex-a8">,
240 HelpText<"Apply fixes for ARM Cortex-A8 erratum 657417">;
242 defm format: Eq<"format", "Change the input format of the inputs following this option">,
243 MetaVarName<"[default,elf,binary]">;
245 defm gc_sections: B<"gc-sections",
246 "Enable garbage collection of unused sections",
247 "Disable garbage collection of unused sections (default)">;
249 defm gdb_index: BB<"gdb-index",
250 "Generate .gdb_index section",
251 "Do not generate .gdb_index section (default)">;
253 defm gnu_unique: BB<"gnu-unique",
254 "Enable STB_GNU_UNIQUE symbol binding (default)",
255 "Disable STB_GNU_UNIQUE symbol binding">;
257 defm hash_style: Eq<"hash-style", "Specify hash style (sysv, gnu or both)">;
259 def help: F<"help">, HelpText<"Print option help">;
261 def icf_all: F<"icf=all">, HelpText<"Enable identical code folding">;
263 def icf_safe: F<"icf=safe">, HelpText<"Enable safe identical code folding">;
265 def icf_none: F<"icf=none">, HelpText<"Disable identical code folding (default)">;
267 def ignore_function_address_equality: FF<"ignore-function-address-equality">,
268 HelpText<"lld can break the address equality of functions">;
270 def ignore_data_address_equality: FF<"ignore-data-address-equality">,
271 HelpText<"lld can break the address equality of data">;
273 defm image_base: EEq<"image-base", "Set the base address">;
275 defm init: Eq<"init", "Specify an initializer function">,
276 MetaVarName<"<symbol>">;
278 defm just_symbols: Eq<"just-symbols", "Just link symbols">;
280 defm keep_unique: Eq<"keep-unique", "Do not fold this symbol during ICF">;
282 def library: JoinedOrSeparate<["-"], "l">, MetaVarName<"<libname>">,
283 HelpText<"Search for library <libname>">;
284 def library_path: JoinedOrSeparate<["-"], "L">, MetaVarName<"<dir>">,
285 HelpText<"Add <dir> to the library search path">;
287 def m: JoinedOrSeparate<["-"], "m">, HelpText<"Set target emulation">;
289 defm Map: Eq<"Map", "Print a link map to the specified file">;
291 defm merge_exidx_entries: B<"merge-exidx-entries",
292 "Enable merging .ARM.exidx entries (default)",
293 "Disable merging .ARM.exidx entries">;
295 defm mmap_output_file: BB<"mmap-output-file",
296 "Mmap the output file for writing (default)",
297 "Do not mmap the output file for writing">;
299 def nmagic: F<"nmagic">, MetaVarName<"<magic>">,
300 HelpText<"Do not page align sections, link against static libraries.">;
302 def nostdlib: F<"nostdlib">,
303 HelpText<"Only search directories specified on the command line">;
305 def no_dynamic_linker: F<"no-dynamic-linker">,
306 HelpText<"Inhibit output of .interp section">;
308 def noinhibit_exec: F<"noinhibit-exec">,
309 HelpText<"Retain the executable output file whenever it is still usable">;
311 def no_nmagic: F<"no-nmagic">, MetaVarName<"<magic>">,
312 HelpText<"Page align sections (default)">;
314 def no_omagic: F<"no-omagic">, MetaVarName<"<magic>">,
315 HelpText<"Do not set the text data sections to be writable, page align sections (default)">;
317 def no_undefined: F<"no-undefined">,
318 HelpText<"Report unresolved symbols even if the linker is creating a shared library">;
320 def no_warnings: FF<"no-warnings">, HelpText<"Suppress warnings and cancel --fatal-warnings">;
321 def : Flag<["-"], "w">, Alias<no_warnings>, HelpText<"Alias for --no-warnings">;
323 def o: JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
324 HelpText<"Path to file to write output">;
326 defm oformat: EEq<"oformat", "Specify the binary format for the output object file">,
327 MetaVarName<"[elf,binary]">;
329 def omagic: FF<"omagic">, MetaVarName<"<magic>">,
330 HelpText<"Set the text and data sections to be readable and writable, do not page align sections, link against static libraries">;
332 defm orphan_handling:
333 Eq<"orphan-handling", "Control how orphan sections are handled when linker script used">;
335 defm pack_dyn_relocs:
336 EEq<"pack-dyn-relocs", "Pack dynamic relocations in the given format">,
337 MetaVarName<"[none,android,relr,android+relr]">;
339 defm use_android_relr_tags: BB<"use-android-relr-tags",
340 "Use SHT_ANDROID_RELR / DT_ANDROID_RELR* tags instead of SHT_RELR / DT_RELR*",
341 "Use SHT_RELR / DT_RELR* tags (default)">;
343 def pic_veneer: F<"pic-veneer">,
344 HelpText<"Always generate position independent thunks (veneers)">;
347 "Create a position independent executable",
348 "Do not create a position independent executable (default)">;
350 defm print_gc_sections: B<"print-gc-sections",
351 "List removed unused sections",
352 "Do not list removed unused sections (default)">;
354 defm print_icf_sections: B<"print-icf-sections",
355 "List identical folded sections",
356 "Do not list identical folded sections (default)">;
358 def print_archive_stats: J<"print-archive-stats=">,
359 HelpText<"Write archive usage statistics to the specified file. "
360 "Print the numbers of members and extracted members for each archive">;
362 defm print_symbol_order: Eq<"print-symbol-order",
363 "Print a symbol order specified by --call-graph-ordering-file into the specified file">;
365 def pop_state: F<"pop-state">,
366 HelpText<"Restore the states saved by --push-state">;
368 def push_state: F<"push-state">,
369 HelpText<"Save the current state of --as-needed, -static and --whole-archive">;
371 def print_map: F<"print-map">,
372 HelpText<"Print a link map to the standard output">;
374 def print_memory_usage: F<"print-memory-usage">,
375 HelpText<"Report target memory usage">;
377 defm relax: BB<"relax",
378 "Enable target-specific relaxations if supported (default)",
379 "Disable target-specific relaxations">;
381 defm relax_gp: BB<"relax-gp",
382 "Enable global pointer relaxation",
383 "Disable global pointer relaxation (default)">;
385 defm remap_inputs: EEq<"remap-inputs",
386 "Remap input files matching <from-glob> to <to-file>">,
387 MetaVarName<"<from-glob>=<to-file>">;
389 def remap_inputs_file: JJ<"remap-inputs-file=">,
390 HelpText<"Each line contains 'from-glob=to-file'. An input file matching <from-glob> is remapped to <to-file>">,
391 MetaVarName<"<file>">;
395 "Write tar file containing inputs and command to reproduce link">;
397 defm rosegment: BB<"rosegment",
398 "Put read-only non-executable sections in their own segment (default)",
399 "Do not put read-only non-executable sections in their own segment">;
401 defm rpath: Eq<"rpath", "Add a DT_RUNPATH to the output">;
403 def relocatable: F<"relocatable">, HelpText<"Create relocatable object file">;
405 defm retain_symbols_file:
406 Eq<"retain-symbols-file", "Retain only the symbols listed in the file">,
407 MetaVarName<"<file>">;
409 defm script: Eq<"script", "Read linker script">;
411 defm section_start: Eq<"section-start", "Set address of section">,
412 MetaVarName<"<address>">;
414 def shared: F<"shared">, HelpText<"Build a shared object">;
416 defm soname: Eq<"soname", "Set DT_SONAME">;
419 Eq<"sort-section", "Specifies sections sorting rule when linkerscript is used">;
421 def start_group: F<"start-group">,
422 HelpText<"Ignored for compatibility with GNU unless you pass --warn-backrefs">;
424 def start_lib: F<"start-lib">,
425 HelpText<"Start a grouping of objects that should be treated as if they were together in an archive">;
427 def strip_all: F<"strip-all">, HelpText<"Strip all symbols. Implies --strip-debug">;
429 def strip_debug: F<"strip-debug">, HelpText<"Strip debugging information">;
431 defm symbol_ordering_file:
432 EEq<"symbol-ordering-file", "Layout sections to place symbols in the order specified by symbol ordering file">;
434 defm sysroot: Eq<"sysroot", "Set the system root">;
436 def target1_rel: F<"target1-rel">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_REL32">;
438 def target1_abs: F<"target1-abs">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_ABS32 (default)">;
441 Eq<"target2", "Interpret R_ARM_TARGET2 as <type>, where <type> is one of rel, abs, or got-rel">,
442 MetaVarName<"<type>">;
446 "Number of threads. '1' disables multi-threading. By default all "
447 "available hardware threads are used">;
449 def time_trace_eq: JJ<"time-trace=">, MetaVarName<"<file>">,
450 HelpText<"Record time trace to <file>">;
451 def : FF<"time-trace">, Alias<time_trace_eq>,
452 HelpText<"Record time trace to file next to output">;
454 defm time_trace_granularity: EEq<"time-trace-granularity",
455 "Minimum time granularity (in microseconds) traced by time profiler">;
457 defm toc_optimize : BB<"toc-optimize",
458 "(PowerPC64) Enable TOC related optimizations (default)",
459 "(PowerPC64) Disable TOC related optimizations">;
461 defm pcrel_optimize : BB<"pcrel-optimize",
462 "(PowerPC64) Enable PC-relative optimizations (default)",
463 "(PowerPC64) Disable PC-relative optimizations">;
465 def trace: F<"trace">, HelpText<"Print the names of the input files">;
467 defm trace_symbol: Eq<"trace-symbol", "Trace references to symbols">;
469 defm undefined: Eq<"undefined", "Force undefined symbol during linking">,
470 MetaVarName<"<symbol>">;
472 defm undefined_glob: EEq<"undefined-glob", "Force undefined symbol during linking">,
473 MetaVarName<"<pattern>">;
475 def unique: F<"unique">, HelpText<"Creates a separate output section for every orphan input section">;
477 defm unresolved_symbols:
478 Eq<"unresolved-symbols", "Determine how to handle unresolved symbols">;
480 defm undefined_version: B<"undefined-version",
481 "Allow unused version in version script (disabled by default)",
482 "Report version scripts that refer undefined symbols">;
484 defm rsp_quoting: EEq<"rsp-quoting", "Quoting style for response files">,
485 MetaVarName<"[posix,windows]">;
487 def v: Flag<["-"], "v">, HelpText<"Display the version number">;
489 def verbose: F<"verbose">, HelpText<"Verbose mode">;
491 def version: F<"version">, HelpText<"Display the version number and exit">;
493 def power10_stubs_eq: JJ<"power10-stubs=">, MetaVarName<"<mode>">,
494 HelpText<"Whether to use Power10 instructions in call stubs for R_PPC64_REL24_NOTOC and TOC/NOTOC "
495 "interworking (yes (default): use; no: don't use). \"auto\" is currently the same as \"yes\"">;
496 def power10_stubs: FF<"power10-stubs">, Alias<power10_stubs_eq>, AliasArgs<["yes"]>,
497 HelpText<"Alias for --power10-stubs=auto">;
498 def no_power10_stubs: FF<"no-power10-stubs">, Alias<power10_stubs_eq>, AliasArgs<["no"]>,
499 HelpText<"Alias for --power10-stubs=no">;
501 defm version_script: Eq<"version-script", "Read a version script">;
503 defm warn_backrefs: BB<"warn-backrefs",
504 "Warn about backward symbol references to extract archive members",
505 "Do not warn about backward symbol references to extract archive members (default)">;
507 defm warn_backrefs_exclude
508 : EEq<"warn-backrefs-exclude",
509 "Glob describing an archive (or an object file within --start-lib) "
510 "which should be ignored for --warn-backrefs.">,
511 MetaVarName<"<glob>">;
513 defm warn_common: B<"warn-common",
514 "Warn about duplicate common symbols",
515 "Do not warn about duplicate common symbols (default)">;
517 defm warn_ifunc_textrel: BB<"warn-ifunc-textrel",
518 "Warn about using ifunc symbols with text relocations",
519 "Do not warn about using ifunc symbols with text relocations (default)">;
521 defm warn_symbol_ordering: BB<"warn-symbol-ordering",
522 "Warn about problems with the symbol ordering file (default)",
523 "Do not warn about problems with the symbol ordering file">;
525 def warn_unresolved_symbols: F<"warn-unresolved-symbols">,
526 HelpText<"Report unresolved symbols as warnings">;
528 defm whole_archive: B<"whole-archive",
529 "Force load of all members in a static library",
530 "Do not force load of all members in a static library (default)">;
532 def why_extract: JJ<"why-extract=">, HelpText<"Print to a file about why archive members are extracted">;
534 defm wrap : Eq<"wrap", "Redirect symbol references to __wrap_symbol and "
535 "__real_symbol references to symbol">,
536 MetaVarName<"<symbol>">;
538 def z: JoinedOrSeparate<["-"], "z">, MetaVarName<"<option>">,
539 HelpText<"Linker option extensions">;
541 def visual_studio_diagnostics_format : FF<"vs-diagnostics">,
542 HelpText<"Format diagnostics for Visual Studio compatibility">;
544 def package_metadata: JJ<"package-metadata=">, HelpText<"Emit package metadata note">;
547 def: Separate<["-"], "f">, Alias<auxiliary>, HelpText<"Alias for --auxiliary">;
548 def: F<"call_shared">, Alias<Bdynamic>, HelpText<"Alias for --Bdynamic">;
549 def: F<"dy">, Alias<Bdynamic>, HelpText<"Alias for --Bdynamic">;
550 def: F<"dn">, Alias<Bstatic>, HelpText<"Alias for --Bstatic">;
551 def: F<"non_shared">, Alias<Bstatic>, HelpText<"Alias for --Bstatic">;
552 def: F<"static">, Alias<Bstatic>, HelpText<"Alias for --Bstatic">;
553 def: Flag<["-"], "x">, Alias<discard_all>, HelpText<"Alias for --discard-all">;
554 def: Flag<["-"], "X">, Alias<discard_locals>, HelpText<"Alias for --discard-locals">;
555 def: Flag<["-"], "q">, Alias<emit_relocs>, HelpText<"Alias for --emit-relocs">;
556 def: Flag<["-"], ")">, Alias<end_group>, HelpText<"Alias for --end-group">;
557 def: JoinedOrSeparate<["-"], "e">, Alias<entry>, HelpText<"Alias for --entry">;
558 def: Flag<["-"], "E">, Alias<export_dynamic>, HelpText<"Alias for --export-dynamic">;
559 def: Separate<["-"], "F">, Alias<filter>, HelpText<"Alias for --filter">;
560 def: Separate<["-"], "b">, Alias<format>, HelpText<"Alias for --format">;
561 def: Separate<["--", "-"], "library">, Alias<library>;
562 def: Joined<["--", "-"], "library=">, Alias<library>;
563 def: Separate<["--", "-"], "library-path">, Alias<library_path>;
564 def: Joined<["--", "-"], "library-path=">, Alias<library_path>;
565 def: Flag<["-"], "n">, Alias<nmagic>, HelpText<"Alias for --nmagic">;
566 def: Flag<["-"], "N">, Alias<omagic>, HelpText<"Alias for --omagic">;
567 def: Joined<["--"], "output=">, Alias<o>, HelpText<"Alias for -o">;
568 def: Separate<["--"], "output">, Alias<o>, HelpText<"Alias for -o">;
569 def: F<"pic-executable">, Alias<pie>, HelpText<"Alias for --pie">;
570 def: Flag<["-"], "M">, Alias<print_map>, HelpText<"Alias for --print-map">;
571 def: Flag<["-"], "r">, Alias<relocatable>, HelpText<"Alias for --relocatable">;
572 def: JoinedOrSeparate<["-"], "R">, Alias<rpath>, HelpText<"Alias for --rpath">;
573 def: JoinedOrSeparate<["-"], "T">, Alias<script>, HelpText<"Alias for --script">;
574 def: F<"Bshareable">, Alias<shared>, HelpText<"Alias for --shared">;
575 def: JoinedOrSeparate<["-"], "h">, Alias<soname>, HelpText<"Alias for --soname">;
576 def: Flag<["-"], "(">, Alias<start_group>, HelpText<"Alias for --start-group">;
577 def: Flag<["-"], "s">, Alias<strip_all>, HelpText<"Alias for --strip-all">;
578 def: Flag<["-"], "S">, Alias<strip_debug>, HelpText<"Alias for --strip-debug">;
579 def: Flag<["-"], "t">, Alias<trace>, HelpText<"Alias for --trace">;
580 def: Joined<["-", "--"], "Ttext-segment=">, Alias<Ttext_segment>;
581 def: JoinedOrSeparate<["-"], "y">, Alias<trace_symbol>, HelpText<"Alias for --trace-symbol">;
582 def: JoinedOrSeparate<["-"], "u">, Alias<undefined>, HelpText<"Alias for --undefined">;
583 def: Flag<["-"], "V">, Alias<v>, HelpText<"Alias for -v">;
585 // LTO-related options.
587 def lto: JJ<"lto=">, HelpText<"Set LTO backend">,
588 MetaVarName<"[full,thin]">;
589 def lto_aa_pipeline: JJ<"lto-aa-pipeline=">,
590 HelpText<"AA pipeline to run during LTO. Used in conjunction with -lto-newpm-passes">;
591 def lto_debug_pass_manager: FF<"lto-debug-pass-manager">,
592 HelpText<"Debug new pass manager">;
593 def lto_emit_asm: FF<"lto-emit-asm">,
594 HelpText<"Emit assembly code">;
595 def lto_newpm_passes: JJ<"lto-newpm-passes=">,
596 HelpText<"Passes to run during LTO">;
597 def lto_O: JJ<"lto-O">, MetaVarName<"<opt-level>">,
598 HelpText<"Optimization level for LTO">;
599 def lto_CGO: JJ<"lto-CGO">, MetaVarName<"<cgopt-level>">,
600 HelpText<"Codegen optimization level for LTO">;
601 def lto_partitions: JJ<"lto-partitions=">,
602 HelpText<"Number of LTO codegen partitions">;
603 def lto_cs_profile_generate: FF<"lto-cs-profile-generate">,
604 HelpText<"Perform context sensitive PGO instrumentation">;
605 def lto_cs_profile_file: JJ<"lto-cs-profile-file=">,
606 HelpText<"Context sensitive profile file path">;
607 defm lto_pgo_warn_mismatch: BB<"lto-pgo-warn-mismatch",
608 "turn on warnings about profile cfg mismatch (default)",
609 "turn off warnings about profile cfg mismatch">;
610 defm lto_known_safe_vtables : EEq<"lto-known-safe-vtables",
611 "When --lto-validate-all-vtables-have-type-infos is enabled, skip validation on these vtables (_ZTV symbols)">;
612 def lto_obj_path_eq: JJ<"lto-obj-path=">;
613 def lto_sample_profile: JJ<"lto-sample-profile=">,
614 HelpText<"Sample profile file path">;
615 defm lto_validate_all_vtables_have_type_infos: BB<"lto-validate-all-vtables-have-type-infos",
616 "Validate that all vtables have type infos for LTO link",
617 "Do not validate that all vtables have type infos for LTO link">;
618 defm lto_whole_program_visibility: BB<"lto-whole-program-visibility",
619 "Asserts that the LTO link has whole program visibility",
620 "Asserts that the LTO link does not have whole program visibility">;
621 def disable_verify: F<"disable-verify">;
622 defm mllvm: Eq<"mllvm", "Additional arguments to forward to LLVM's option processing">;
623 def opt_remarks_filename: Separate<["--"], "opt-remarks-filename">,
624 HelpText<"YAML output file for optimization remarks">;
625 defm opt_remarks_hotness_threshold: EEq<"opt-remarks-hotness-threshold",
626 "Minimum profile count required for an optimization remark to be output."
627 " Use 'auto' to apply the threshold from profile summary.">,
628 MetaVarName<"<value>">;
629 def opt_remarks_passes: Separate<["--"], "opt-remarks-passes">,
630 HelpText<"Regex for the passes that need to be serialized to the output file">;
631 def opt_remarks_with_hotness: FF<"opt-remarks-with-hotness">,
632 HelpText<"Include hotness information in the optimization remarks file">;
633 def opt_remarks_format: Separate<["--"], "opt-remarks-format">,
634 HelpText<"The format used for serializing remarks (default: YAML)">;
635 def save_temps: F<"save-temps">, HelpText<"Save intermediate LTO compilation results">;
636 def save_temps_eq: JJ<"save-temps=">, HelpText<"Save select intermediate LTO compilation results">,
637 Values<"resolution,preopt,promote,internalize,import,opt,precodegen,prelink,combinedindex">;
638 def lto_basic_block_sections: JJ<"lto-basic-block-sections=">,
639 HelpText<"Enable basic block sections for LTO">;
640 defm lto_unique_basic_block_section_names: BB<"lto-unique-basic-block-section-names",
641 "Give unique names to every basic block section for LTO",
642 "Do not give unique names to every basic block section for LTO (default)">;
643 defm shuffle_sections: EEq<"shuffle-sections",
644 "Shuffle matched sections using the given seed before mapping them to the output sections. "
645 "If -1, reverse the section order. If 0, use a random seed">,
646 MetaVarName<"<section-glob>=<seed>">;
647 def thinlto_cache_dir: JJ<"thinlto-cache-dir=">,
648 HelpText<"Path to ThinLTO cached object file directory">;
649 defm thinlto_cache_policy: EEq<"thinlto-cache-policy", "Pruning policy for the ThinLTO cache">;
650 def thinlto_emit_imports_files: FF<"thinlto-emit-imports-files">;
651 def thinlto_emit_index_files: FF<"thinlto-emit-index-files">;
652 def thinlto_index_only: FF<"thinlto-index-only">;
653 def thinlto_index_only_eq: JJ<"thinlto-index-only=">;
654 def thinlto_jobs_eq: JJ<"thinlto-jobs=">,
655 HelpText<"Number of ThinLTO jobs. Default to --threads=">;
656 def thinlto_object_suffix_replace_eq: JJ<"thinlto-object-suffix-replace=">;
657 def thinlto_prefix_replace_eq: JJ<"thinlto-prefix-replace=">;
658 def thinlto_single_module_eq: JJ<"thinlto-single-module=">,
659 HelpText<"Specify a single module to compile in ThinLTO mode, for debugging only">;
661 defm fat_lto_objects: BB<"fat-lto-objects",
662 "Use the .llvm.lto section, which contains LLVM bitcode, in fat LTO object files to perform LTO.",
663 "Ignore the .llvm.lto section in relocatable object files (default).">;
665 def: J<"plugin-opt=O">, Alias<lto_O>, HelpText<"Alias for --lto-O">;
666 def: F<"plugin-opt=debug-pass-manager">,
667 Alias<lto_debug_pass_manager>, HelpText<"Alias for --lto-debug-pass-manager">;
668 def: F<"plugin-opt=disable-verify">, Alias<disable_verify>, HelpText<"Alias for --disable-verify">;
669 def plugin_opt_dwo_dir_eq: J<"plugin-opt=dwo_dir=">,
670 HelpText<"Directory to store .dwo files when LTO and debug fission are used">;
671 def plugin_opt_emit_asm: F<"plugin-opt=emit-asm">,
672 Alias<lto_emit_asm>, HelpText<"Alias for --lto-emit-asm">;
673 def plugin_opt_emit_llvm: F<"plugin-opt=emit-llvm">;
674 def: J<"plugin-opt=jobs=">, Alias<thinlto_jobs_eq>, HelpText<"Alias for --thinlto-jobs=">;
675 def: J<"plugin-opt=lto-partitions=">, Alias<lto_partitions>, HelpText<"Alias for --lto-partitions">;
676 def plugin_opt_mcpu_eq: J<"plugin-opt=mcpu=">;
677 def: F<"plugin-opt=cs-profile-generate">,
678 Alias<lto_cs_profile_generate>, HelpText<"Alias for --lto-cs-profile-generate">;
679 def: J<"plugin-opt=cs-profile-path=">,
680 Alias<lto_cs_profile_file>, HelpText<"Alias for --lto-cs-profile-file">;
681 def: J<"plugin-opt=obj-path=">,
682 Alias<lto_obj_path_eq>,
683 HelpText<"Alias for --lto-obj-path=">;
684 def: J<"plugin-opt=opt-remarks-filename=">,
685 Alias<opt_remarks_filename>,
686 HelpText<"Alias for --opt-remarks-filename">;
687 def: J<"plugin-opt=opt-remarks-passes=">,
688 Alias<opt_remarks_passes>,
689 HelpText<"Alias for --opt-remarks-passes">;
690 def: J<"plugin-opt=opt-remarks-format=">,
691 Alias<opt_remarks_format>,
692 HelpText<"Alias for --opt-remarks-format">;
693 def: F<"plugin-opt=opt-remarks-with-hotness">,
694 Alias<opt_remarks_with_hotness>,
695 HelpText<"Alias for --opt-remarks-with_hotness">;
696 def: J<"plugin-opt=opt-remarks-hotness-threshold=">,
697 Alias<opt_remarks_hotness_threshold>,
698 HelpText<"Alias for --opt-remarks-hotness-threshold">;
699 def: J<"plugin-opt=sample-profile=">,
700 Alias<lto_sample_profile>, HelpText<"Alias for --lto-sample-profile">;
701 def: F<"plugin-opt=save-temps">, Alias<save_temps>, HelpText<"Alias for --save-temps">;
702 def plugin_opt_stats_file: J<"plugin-opt=stats-file=">,
703 HelpText<"Filename to write LTO statistics to">;
704 def: F<"plugin-opt=thinlto-emit-imports-files">,
705 Alias<thinlto_emit_imports_files>,
706 HelpText<"Alias for --thinlto-emit-imports-files">;
707 def: F<"plugin-opt=thinlto-index-only">,
708 Alias<thinlto_index_only>,
709 HelpText<"Alias for --thinlto-index-only">;
710 def: J<"plugin-opt=thinlto-index-only=">,
711 Alias<thinlto_index_only_eq>,
712 HelpText<"Alias for --thinlto-index-only=">;
713 def: J<"plugin-opt=thinlto-object-suffix-replace=">,
714 Alias<thinlto_object_suffix_replace_eq>,
715 HelpText<"Alias for --thinlto-object-suffix-replace=">;
716 def: J<"plugin-opt=thinlto-prefix-replace=">,
717 Alias<thinlto_prefix_replace_eq>,
718 HelpText<"Alias for --thinlto-prefix-replace=">;
720 // Ignore LTO plugin-related options.
721 // clang -flto passes -plugin and -plugin-opt to the linker. This is required
722 // for ld.gold and ld.bfd to get LTO working. But it's not for lld which doesn't
723 // rely on a plugin. Instead of detecting which linker is used on clang side we
724 // just ignore the option on lld side as it's easier. In fact, the linker could
725 // be called 'ld' and understanding which linker is used would require parsing of
727 defm plugin: Eq<"plugin", "Ignored for compatibility with GNU linkers">;
729 def plugin_opt_eq_minus: J<"plugin-opt=-">,
730 HelpText<"Specify an LLVM option for compatibility with LLVMgold.so">;
731 def: J<"plugin-opt=thinlto">;
733 // Ignore GCC collect2 LTO plugin related options. Note that we don't support
734 // GCC LTO, but GCC collect2 passes these options even in non-LTO mode.
735 def: J<"plugin-opt=-fresolution=">;
736 def: J<"plugin-opt=-pass-through=">;
737 // This may be either an unhandled LLVMgold.so feature or GCC passed
738 // -plugin-opt=path/to/{liblto_plugin.so,lto-wrapper}
739 def plugin_opt_eq : J<"plugin-opt=">;
741 // Options listed below are silently ignored for now for compatibility.
742 def: Flag<["-"], "d">;
743 def: Flag<["-"], "g">;
745 def: FF<"no-add-needed">;
746 def: F<"no-copy-dt-needed-entries">;
747 def: F<"no-ctors-in-init-array">;
748 def: F<"no-keep-memory">;
749 def: F<"no-warn-mismatch">;
750 def: Separate<["--", "-"], "rpath-link">;
751 def: J<"rpath-link=">;
752 def: F<"secure-plt">;
753 def: F<"sort-common">;
755 def: F<"warn-execstack">;
757 def: F<"warn-shared-textrel">;
758 def: JoinedOrSeparate<["-"], "G">;
760 // Hidden option used for testing MIPS multi-GOT implementation.
762 Eq<"mips-got-size", "Max size of a single MIPS GOT. 0x10000 by default.">,
765 // Hidden option used to opt-in to additional output checks.
766 defm check_dynamic_relocations: BB<"check-dynamic-relocations",
767 "Perform additional validation of the written dynamic relocations",
768 "Do not perform additional validation of the written dynamic relocations">,
771 defm load_pass_plugins: EEq<"load-pass-plugin", "Load passes from plugin library">;
773 // Hidden options, used by clang's -fsanitize=memtag-* options to emit an ELF
774 // note to designate what kinds of memory (stack/heap) should be protected using
775 // ARM's MTE on armv8.5+. A binary's desire for stack MTE can't be obtained
776 // implicitly, so we have a specific bit in the note to signal to the loader to
777 // remap the stack as PROT_MTE.
778 defm android_memtag_stack: BB<"android-memtag-stack",
779 "Instruct the dynamic loader to prepare for MTE stack instrumentation", "">;
780 defm android_memtag_heap: BB<"android-memtag-heap",
781 "Instruct the dynamic loader to enable MTE protection for the heap", "">;
782 defm android_memtag_mode: EEq<"android-memtag-mode",
783 "Instruct the dynamic loader to start under MTE mode {async, sync, none}">;